ASTROSAT CZTI

Data Quality Report

Orbit 20160111_G02_019T01_9000000264_level2

Creation date: 2017-10-27T07:38:54.458177
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G02_019T01_9000000264cztM0_level2.evt modeM0/AS1G02_019T01_9000000264cztM0_level2_quad_clean.evt
Size (bytes)619,358,40043,064,640
Size590.7 MB 41.1 MB
Events in quadrant A4,502,170263,701
Events in quadrant B4,650,665269,918
Events in quadrant C4,378,370267,101
Events in quadrant D4,990,109251,983

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158772
B0163261
C0155451
D0173991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3540631.779661%
B3540541.525424%
C3540541.525424%
D35402426.836158%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 4795 3540 193 193 4.03% 5.45%
B 4795 3540 210 210 4.38% 5.93%
C 4795 3540 154 154 3.21% 4.35%
D 4795 3540 549 549 11.45% 15.51%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 2 5098 13.75 1174 1181 284.9
A 13 9 4797 12.69 1174 1181 284.9
A 15 236 4255 10.79 1174 1181 284.9
B 0 190 35575 121.59 1213 1219 282.6
B 0 220 14136 45.72 1213 1219 282.6
B 4 170 7006 20.48 1213 1219 282.6
C 10 34 6774 18.06 1118 1156 311.1
C 8 208 5021 12.42 1118 1156 311.1
C 8 229 3678 8.11 1118 1156 311.1
D 10 84 702967 2247.35 1080 1094 312.3
D 7 85 91798 290.43 1080 1094 312.3
D 13 169 60738 190.98 1080 1094 312.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter